assistant vs word processor

assistant

noun
  • A software tool that provides assistance in some task, a wizard program. 

  • Sales assistant. 

  • A person who assists or helps someone else. 

adj
  • Helping; lending aid or support; auxiliary. 

  • Having a subordinate or auxiliary position. 

word processor

noun
  • A device similar to a simple computer, designed for word processing. 

  • Software that provides word processing functions on a computer, typically including typeface selection, line justification and other formatting, pagination, and numerous other features. 

How often have the words assistant and word processor occurred in a corpus of books? (source: Google Ngram Viewer )